{"uid":"cap_xaaRTjjoee6w-hqaXT5l-","slug":"build-token-purchase-1-usdc-x420-dev-7f6a13b0","name":"BUILD Token Purchase (1 USDC) - x420.dev","description":"Buy 1 USDC worth of BUILD tokens 0xa8b9cc8f89C1dAb497fEA439848c020F64DB1b07","url":"https://build.x420.dev/api/puff?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":null,"responseSchema":{"message":"string","tokensReceived":"string","usdcAmountPaid":"string","sendTransactionHash":"string | null","swapTransactionHash":"string | null"},"example":{"request":{},"response":{"token":{"name":"构建","symbol":"BUILD","address":"0xa8b9cc8f89C1dAb497fEA439848c020F64DB1b07","description":""},"message":"Puffed","tokensReceived":"5739969.3961286732429524","usdcAmountPaid":"$1","sendTransactionHash":"0x8b64c81f5531562b967ecec5a96c67603766fbb5a0ec662f27195e1ea21d3758","swapTransactionHash":"0xd987ed95e77e084db4def177e9579d56ed73cd95eb1b0e579c18c0d046cbe1d4"}},"exampleRequest":{},"tags":["x402"],"displayCostAmount":"1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wfbPvM-iHtgJIxMfAVtEH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Purchases 1 USDC worth of BUILD tokens (contract 0xa8b9cc8f89C1dAb497fEA439848c020F64DB1b07) and delivers them to the caller","exampleAgentPrompt":"Buy me 1 USDC worth of BUILD tokens (contract 0xa8b9cc8f89C1dAb497fEA439848c020F64DB1b07) using the x420.dev BUILD endpoint.","exampleUseCases":null,"resultDescription":"Returns a message confirming the purchase, the amount of BUILD tokens received, the USDC amount paid, a send transaction hash, and a swap transaction hash (both may be null if not yet confirmed).","failureModes":["Insufficient USDC balance — payment fails and no tokens are received","x402 payment protocol error — request rejected before swap executes","On-chain swap failure — USDC deducted but swap transaction hash is null indicating failure","Network congestion — transaction may be delayed or dropped","Invalid payment header — 402 response requiring correct x402 payment setup"],"whenToPreferThis":"Use this endpoint when you need to programmatically acquire a small (1 USDC) amount of BUILD tokens on-chain via the x402 micropayment protocol. Prefer this over the 5 USDC sibling endpoint when you want a minimal, low-risk purchase or are testing the integration. This is suitable for agents that need to autonomously acquire BUILD tokens without manual wallet interaction.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:31:37.611Z","isFirstParty":false,"canonicalSlug":"build-token-purchase-1-usdc-x420-dev-7f6a13b0"}